Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1041493 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR26855930_1.fastq.gz | Fastqsanger.gz | |||
| SRR26855930_2.fastq.gz | Fastqsanger.gz | |||
| SRR26855931_1.fastq.gz | Fastqsanger.gz | |||
| SRR26855931_2.fastq.gz | Fastqsanger.gz | |||
| SRR26855932_1.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 12 |
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Project description:Circulating tumour cells (CTCs) shed into blood from primary cancers include putative precursors that initiate distal metastases. While these cells are extraordinarily rare, they may identify cellular pathways contributing to the blood-borne dissemination of cancer. Here, we adapted a microfluidic device for efficient capture of CTCs from an endogenous mouse pancreatic cancer model and subjected CTCs to single-molecule RNA sequencing, identifying Wnt2 as enriched in CTCs. Expression of Wnt2 in pancreatic cancer cells suppresses anoikis, enhances anchorage-independent sphere formation, and increases metastatic propensity in vivo. The effect of Wnt2 is correlated with fibronectin upregulation, and it is mediated in part through non-canonical Wnt signaling and suppressed by inhibition of the Map3k7 (Tak1) kinase, an integrator of Wnt, BMP and TGF-beta signaling. In humans, formation of non-adherent tumour spheres by pancreatic cancer cells is associated with upregulation of multiple Wnt genes, and pancreatic CTCs revealed significant enrichment for non-canonical Wnt signaling in 5 of 11 cases. Thus, molecular analysis of CTCs may identify novel therapeutic targets to prevent the distal spread of cancer. Expression profiling of circulating tumor cells in human pancreatic cancer patients support a hypothesis that WNT signaling plays a role in pancreatic cancer metastasis.
2012-08-17 | E-GEOD-40174 | biostudies-arrayexpress
Project description:Circulating tumour cells (CTCs) shed into blood from primary cancers include putative precursors that initiate distal metastases. While these cells are extraordinarily rare, they may identify cellular pathways contributing to the blood-borne dissemination of cancer. Here, we adapted a microfluidic device for efficient capture of CTCs from an endogenous mouse pancreatic cancer model and subjected CTCs to single-molecule RNA sequencing, identifying Wnt2 as enriched in CTCs. Expression of Wnt2 in pancreatic cancer cells suppresses anoikis, enhances anchorage-independent sphere formation, and increases metastatic propensity in vivo. The effect of Wnt2 is correlated with fibronectin upregulation, and it is mediated in part through non-canonical Wnt signaling and suppressed by inhibition of the Map3k7 (Tak1) kinase, an integrator of Wnt, BMP and TGF-beta signaling. In humans, formation of non-adherent tumour spheres by pancreatic cancer cells is associated with upregulation of multiple Wnt genes, and pancreatic CTCs revealed significant enrichment for non-canonical Wnt signaling in 5 of 11 cases. Thus, molecular analysis of CTCs may identify novel therapeutic targets to prevent the distal spread of cancer. Expression profiling of primary tumor, circulating tumor cells and ascites in a mouse model of pancreatic cancer suggested WNT signaling plays a role in pancreatic cancer metastasis. Induction of Wnt2 signaling in mouse pancreatic NB508 cells supported the hypothesis.
2012-08-17 | E-GEOD-40171 | biostudies-arrayexpress
Project description:Circulating tumour cells (CTCs) shed into blood from primary cancers include putative precursors that initiate distal metastases. While these cells are extraordinarily rare, they may identify cellular pathways contributing to the blood-borne dissemination of cancer. Here, we adapted a microfluidic device for efficient capture of CTCs from an endogenous mouse pancreatic cancer model and subjected CTCs to single-molecule RNA sequencing, identifying Wnt2 as enriched in CTCs. Expression of Wnt2 in pancreatic cancer cells suppresses anoikis, enhances anchorage-independent sphere formation, and increases metastatic propensity in vivo. The effect of Wnt2 is correlated with fibronectin upregulation, and it is mediated in part through non-canonical Wnt signaling and suppressed by inhibition of the Map3k7 (Tak1) kinase, an integrator of Wnt, BMP and TGF-beta signaling. In humans, formation of non-adherent tumour spheres by pancreatic cancer cells is associated with upregulation of multiple Wnt genes, and pancreatic CTCs revealed significant enrichment for non-canonical Wnt signaling in 5 of 11 cases. Thus, molecular analysis of CTCs may identify novel therapeutic targets to prevent the distal spread of cancer.
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Project description:To investigate MMP10 downstream targets involved in the regulation of tongue cancer metastasis, transcriptome sequencing of MMP10 overexpression (AW13516) and knockdown clones (AW8507 and CAL27) was performed. 1) For stable overexpression of MMP10 in AW13516 cell line, pBABEpuro-MMP10 construct was used. pBABE-puro empty vector was used as control for overexpression. Transfection was carried out using lipofectamine kit (Cat No. L3000015, Invitrogen) in 293FT cells and virus was collected after 48 hours. AW13516 cells were infected with viral particles to generate stable MMP10-overexpression or vector control clones. Stable MMP10-overexpression clones generated and used for RNA-seq are: a) AW13516-vector control; b) AW13516-MMP10 overexpression clones. 2) For shRNA mediated stable knockdown of MMP10 in CAL27 and AW8507 cell lines, 3 lentiviral shRNA constructs targeting MMP10 were used. A short hairpin non-targeting (sh-NT) construct was used as vector control. Transfection and infection with viral particles was performed as described in the overexpression study. Stable MMP10-knockdown clones generated and used for RNA-seq are: a) AW8507 shRNA-NT vector control, b) AW8507 MMP10 shRNA-1, c) AW8507 MMP10 shRNA-2, d) AW8507 MMP10 shRNA-3, e) CAL27 shRNA-NT vector control, f) CAL27 MMP10 shRNA-1, g) CAL27 MMP10 shRNA-2, h) CAL27 MMP10 shRNA-3. To identify the differentially expressed genes, cuffdiff and NOISeq tools were used, and overlapping significantly differentially expressed genes (-1.5<log2FC>1.5; p-value<0.05 or prob>0.95) were identified for further characterization.
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